.TH std::system_error::operator= 3 "2024.06.10" "http://cppreference.com" "C++ Standard Libary"
.SH NAME
std::system_error::operator= \- std::system_error::operator=

.SH Synopsis
   system_error& operator=( const system_error& other ) noexcept;  \fI(since C++11)\fP

   Assigns the contents with those of other. If *this and other both have dynamic type
   std::system_error then std::strcmp(what(), other.what()) == 0 after assignment.

.SH Parameters

   other - another system_error object to assign with

.SH Return value

   *this

.SH Example


// Run this code

 #include <cassert>
 #include <cstring>
 #include <iostream>
 #include <system_error>

 void print(const std::system_error& e)
 {
     std::cout << "code:    [" << e.code() << "]\\n"
                  "message: [" << e.code().message() << "]\\n"
                  "what:    [" << e.what() << "]\\n\\n";
 }

 int main()
 {
     std::system_error e1(EDOM, std::generic_category(), "Error info #1");
     print(e1);

     std::system_error e2(EIO, std::system_category(), "Error info #2");
     print(e2);

     e1 = e2;
     assert(std::strcmp(e1.what(), e2.what()) == 0);
     print(e1);
 }

.SH Possible output:

 code:    [generic:33]
 message: [Numerical argument out of domain]
 what:    [Error info #1: Numerical argument out of domain]

 code:    [system:5]
 message: [Input/output error]
 what:    [Error info #2: Input/output error]

 code:    [system:5]
 message: [Input/output error]
 what:    [Error info #2: Input/output error]
